Claude Code built Dela, a self-hosted task manager with E2E encryption, in 19 hours

⚡ The gist in 5 seconds - A developer has released Dela — a task manager that runs on your own server, with data encrypted on the device. - The server acts only as a store and distributor of ciphertext, while the phone and computer sync edits between themselves. - According to the author, the project's code was written entirely by Claude Code in 19 hours; details are in the article on Habr. ### 🔍 What was found Habr has published an article by the developer about Dela — a self-hosted task manager. The product is deployed on the user's own server rather than living in someone else's cloud. The key feature is end-to-end encryption: tasks are encrypted on the device, and the server only stores and serves the ciphertext, meaning data never reaches the server side in plaintext. Edits are synced between the phone and the computer. A separate detail the author puts in the headline: he claims the entire codebase was written by Claude Code in 19 hours. The mechanics follow the classic responsibility-splitting scheme used in E2E services: the server side has no access to task contents, since keys and decryption remain on the client, while the server only handles ciphertext. The exact stack, key storage scheme, sync protocol, and license are not disclosed in the original description — you'll have to go to the article itself for those. There the author also promises to show how to deploy the project on your own server. ### 💡 Why it matters Self-hosted apps with E2E encryption are a direct alternative to cloud task managers, where task contents are stored on the vendor's side. Here, the risk of a server-side leak is limited by the fact that the server only sees ciphertext, and control over the infrastructure stays with the user. The second layer of this story is not the product but the method: if Claude Code really did assemble a working project with a client-server architecture in 19 hours, that's another point in favor of autonomous coding agents. Both claims can only be verified through the source code and the author's article — there is no independent confirmation in the source material.